import javax.swing.*;
class DatabaseFrame extends JFrame {
   public DatabaseFrame() {
      JPanel CenterPane=new JPanel();
      final JButton okButton=new JButton("OK");
      CenterPane.add(okButton);
      final JButton cancelButton=new JButton("Cancel");
      CenterPane.add(cancelButton);
   }
}
class TableFrame extends JFrame {
   public TableFrame() {
   }
}
